invisible trade的用法和樣例：
例句
- In consequence,there was a marked increase in the combined visible and invisible trade surplus over the year.
因此，一九九九年的有形及無形貿易綜合盈餘顯著上升。 - The visible trade is the import and export ofc oods, and the invisible trade is the exchange of services between countries.
有形貿易指貨物的進出口貿易，而無形貿易涉及的是國家間的勞務交換。
